Service difficulty report · Stator · Bell 206B

Difficulty date
May 21, 2008
Submitted
November 3, 2008
Operation
General aviation
Make and model
Bell 206B
Aircraft time
15,242 hours
Engine
Allsn 250C20B
Part
Stator
Part number
23057142
Condition
Missing
Location
6th Stage
Component
Compressor · Allsn
Component part number
6890550
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) COMPRESSOR ASSY WAS REMOVED FOR O/H, AT WHICH TIME IT WAS NOTED THE 6TH STAGE STATOR BAND WAS MISSING ONE BLADE, WITH IMPACT DAMAGE NOTED ON OTHER BLADES ALSO IN THE 6TH BAND. NO DAMAGE NOTED FWD OF 6 TH STAGE. BURNER CAN REMOVED AND TURBINE INSPECTED FOR FOD, BUT NONE WAS FOUND. IT DID NOT APPEAR THAT THE STATOR WENT THROUGH THE ENGINE, HOWEVER, AT THIS TIME, WE WERE UNABLE TO LOCATE THE DEPARTED BLADE. THE CRACK APPEARS RECENT, AND IT IS BELIEVED THE BLADE CRACKED IN THE LAST 100 HOURS OF OPERATION (TC NR 20080527002)

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